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Field view of the Late Santonian-Campanian black shales in Nallihan area (Oceanic Anoxic Event, OAE3). Photo courtesy of Ismail Omar Yilmaz
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Field view of the Late Santonian-Campanian black shales in Nallihan area (Oceanic Anoxic Event, OAE3). Photo courtesy of Ismail Omar Yilmaz